The following table presents the latest dates by which the national standards are to be attained. The dates reflect the information presented in Kentucky's plan, except where noted.
| Air quality control region
| Pollutant
|
|---|
| Particulate matter
| Sulfur oxides
| Nitrogen dioxide
| Carbon monoxide
| Ozone
|
|---|
| Primary
| Secondary
| Primary
| Secondary
|
|---|
| Appalachian Intrastate:
| | | | | | | |
| a. Bell County | g | h | b | b | b | b | b
|
| b. Perry County | g | h | b | b | b | b | b
|
| c. Whitley County | g | h | b | b | b | b | b
|
| d. Rest of AQCR | c | c | b | b | b | b | b
|
| Bluegrass Intrastate:
| | | | | | | |
| a. Fayette County | a | c | b | b | b | b | g
|
| b. Madison County | g | h | b | b | b | b | b
|
| c. Rest of AQCR | a | c | b | b | b | b | b
|
| Evansville (Indiana)-Ownsboro-Henderson (Kentucky) Interstate:
| | | | | | | |
| a. Daviess County | g | i | g | g | b | b | b
|
| b. Henderson County | g | i | a | e | b | b | g
|
| c. Webster County | c | c | g | g | b | b | b
|
| d. Rest of AQCR | c | c | a | e | b | b | b
|
| Huntington (West Virginia)-Ashland (Kentucky)-Portsmouth-Ironton (Ohio) Interstate:
| | | | | | | |
| a. Boyd County | g | i | g | b | b | b | g
|
| b. Lawrence County | g | h | b | b | b | b | b
|
| c. Rest of AQCR | c | c | b | b | b | b | b
|
| Louisville Interstate | g | i | j | j | b | h | h
|
| Metropolitan Cincinnati Interstate:
| | | | | | | |
| a. Boone County | c | c | a | d | b | d | h
|
| b. Campbell County | g | h | a | d | b | d | h
|
| c. Kenton County | c | c | a | d | b | d | h
|
| d. Rest of AQCR | c | c | a | d | b | d | c
|
| North Central Kentucky Intrastate:
| | | | | | | |
| a. Bullitt County | g | h | b | b | b | b | b
|
| b. Rest of AQCR | a | c | b | b | b | b | b
|
| Paducah (Kentucky) Cairo (Illinois) Interstate:
| | | | | | | |
| a. McCracken County | g | h | g | f | b | b | b
|
| b. Marshall County | c | g | a | f | b | b | b
|
| c. Muhlenberg County | g | h | g | g | b | b | b
|
| d. Rest of AQCR | c | c | a | f | b | b | b
|
| South Central Kentucky Intrastate | b | b | b | b | b | b | b
|